94-05 Mazdaspeed Miata / 1.8L Turbo | ID1300 | Injector Dynamics | 1300.11.02.60.11.4-0

94-05 Mazdaspeed Miata / 1.8L Turbo | ID1300-XDS | Injector Dynamics | 1300.11.02.60.11.4

Details
Options

ID1300-XDS, for 94-05 Mazdaspeed Miata / 1.8L Turbo, 11mm (blue) adapters, -204 lower cushions (remove lower o-ring retainer) Set of 4.

The ID1300 is an all new injector, designed in partnership with Bosch Motorsport. This collaboration has given us the ability to design a high flow injector with characteristics specific to the needs of the motorsport tuner. The ID1300 was designed with alternative fuels in mind, and is the only performance injector available with all stainless internals. It is compatible with all known fuels, and will stand up to the corrosive nature of alcohol better than any injector on the market.

While the ID1300 was designed with an eye towards ethanol fueled engines, we have accounted for the occasional need to convert back to gasoline. The ID1300 has a minimum fuel mass compatible with gasoline use, and will provide exceptional idle and cruise behavior under these conditions. In addition to its multi-fuel capabilities, the compact body of the ID1300 allows fitment in 200+ applications, making it the most versatile injector in our lineup. The 1300 has continued to be refined and improved over the years, and the 1300-XDS is the latest and best version to date.

Base Specifications

Nominal Flow Rate – 1340cc/min @ 3.0 Bar (43.5 psi) Using Iso Octane at 52 Degrees C (125 Degrees F)
Maximum Differential Fuel Pressure – 6.0 Bar (87.0 psi)
Fuel Compatibility – Compatible With All Known Fuels – (Designed Specifically for Alternative Fuels)
Electrical Connector – USCAR

Details

Frequently Asked Questions About the 94-05 Mazdaspeed Miata / 1.8L Turbo

What maximum E85 horsepower will the ID1300-XDS set support on a highly modified Mazdaspeed Miata (1.8L Turbo) engine?

The ID1300-XDS (1335 cc/min at 43.5 psi) is a top-tier choice for extreme Mazdaspeed Miata builds. This 4-injector set provides sufficient flow for E85 setups well above 550 wheel horsepower (whp), giving maximum safety margin and preventing duty cycle issues even on large aftermarket turbo kits.

Does the 60mm ID1300-XDS (PN: 1300.11.02.60.11.4) require removing the lower O-ring retainers from the 1.8L intake manifold ports?

Yes, removal is required. This set uses an 11mm adapter top, 60mm O-ring to O-ring length, and the -204 lower cushion. For correct installation and sealing in the Mazdaspeed Miata manifold, the factory lower O-ring retainer cups must be removed from the intake manifold ports before installing the injectors.

Where can I find the precise dead time and injector flow characterization data for the ID1300-XDS to correctly tune my Megasquirt (MS3PNP) ECU?

Injector Dynamics provides validated Dead Time (Latency) data, Short Pulse Adder tables, and Flow vs. Pressure tables (based on ID1300x) directly on their website. This data is critical for Megasquirt tuning to ensure stable idle and accurate AFR control in the low-pulse width range of the small 1.8L engine.

Since the factory Mazdaspeed Miata uses Denso injector connectors, will this ID1300-XDS set work without modifying the harness?

No, not without adapters. The ID1300-XDS uses the universal USCAR connector. You will need one USCAR to Denso Plug-and-Play (PNP) adapter (ID P/N 90.3) per injector (total of four) to convert the USCAR plug to the Denso plug found on the 94-05 Miata harness, ensuring a clean installation.

Will 1300 cc/min injectors cause a rough idle or stumbling issues on my 1.8L Miata when running pump gasoline at low RPM?

No, not with accurate data. Due to the ID1300-XDS's precision-matched low-pulse stability (Dual Slope Matching), it maintains superior linearity even at the minimum fuel mass required by the 1.8L at idle. With correct dead time and offset data entered into your standalone ECU, the idle quality will remain smooth and OEM-like on gasoline.